Abstract: A method for transferring unwinders (36) using a transfer facility (38) comprising a control unit (39) for controlling the unwinders, and at least one autonomous mobile platform (40) is disclosed. The facility comprises measurement means for measuring the quantity of product wound on reels (22) supported by the unwinders and communication means. The method comprises the following successive operations: measuring the quantity of product wound on the reels and communicating the measured data to the control unit; on the basis of the measured data, determining the moment at which to transmit a removal or supply mission instruction to a mobile platform; transmitting to a mobile platform at the previously-determined moment, a mission instruction to remove or to supply a unwinder; and moving the mobile platform in such a way that it becomes positioned under a unwinder.

Abstract: A method for supplying green tire manufacturing machines (14) with elastomeric products (12) by means of a supply facility (10) comprising a loading member (30) and at least one transfer member (34) comprising an unwinder (36) is disclosed. The supply facility comprises a preparation station (32), said preparation station comprising a manipulator arm (70), and at least one motor (53), the preparation station and the unwinder being distinct from the green tire manufacturing machine. The method comprises the following successive operations: loading the reel onto the unwinder; positioning the end of the product wound on the réel; arranging the end of the product in such a way that it is laid on a dispenser of the unwinder; and transferring the reel from the preparation station to the green tire manufacturing machine.

Abstract: The machine includes an extrusion head having flow ducts, the inlet orifices of which are connected to the outlets of at least two extruders for supplying extruded strips made of elastomeric compounds. The outlet orifices lead into a die which is adjacent to a roller and is designed to cooperate with the latter to shape the profiled element strip. The roller has a central axis surrounded by an external surface intended to receive the profiled element strip and a means for driving the roller in rotation about its central axis. The flow ducts are mutually parallel and are perpendicular to the circumferential direction of the roller, and the profiled element strip is joined to the receiving surface of the roller along an equivalent length of at least 700 mm.

Abstract: The machine includes an extrusion head having flow ducts, the inlet orifices of which are connected to the outlets of at least two extruders for supplying extruded strips made of elastomeric compounds. The outlet orifices lead into a die which is adjacent to a roller and is designed to cooperate with the latter to shape the profiled element strip. The roller has a central axis surrounded by an external surface intended to receive the profiled element strip and a means for driving the roller in rotation about its central axis. The flow ducts are mutually parallel and are perpendicular to the circumferential direction of the roller, and the profiled element strip is joined to the receiving surface of the roller along an equivalent length of at least 700 mm.

Abstract: A spoke for a non-pneumatic wheel and the wheel incorporating such spoke. The spoke is provided with one or more features that, may allow e.g., a non-pneumatic tire of the wheel to be removed from a wheel hub so that another hub or tire can be substituted. The spoke has a reinforcement structure that may include one or more features providing support for operation of the non-pneumatic wheel.

Abstract: A device for manufacturing a reinforcing ply N by assembling lengths of strip cut at an angle, comprising: a feed means (300) for delivering a strip (B), an assembly belt (101), a transfer means (200) for conveying onto the assembly belt a given length of straight-grain strip in a direction (AA?) comprising a retaining wall (211), parallel to the planes of the assembly belt (101) and of the feed means, and a first face (211a) of which is intended to come into contact with the surface of the strip, in which device the feed means (300), the transfer means (200) and the assembly belt (101) are fitted with magnetic means.

Abstract: A device for manufacturing a reinforcing ply N by assembling lengths of strip cut at an angle, comprising: a feed means (300) for delivering a strip (B), an assembly belt (101), a transfer means (200) for conveying onto the assembly belt a given length of straight-grain strip in a direction (AA?) comprising a retaining wall (211), parallel to the planes of the assembly belt (101) and of the feed means, and a first face (211a) of which is intended to come into contact with the surface of the strip, in which device the feed means (300), the transfer means (200) and the assembly belt (101) are fitted with magnetic means.

Abstract: A process for sheathing at least one cord with a plastic or thermoplastic material using a cord sheathing device comprising a guiding device for the at least one cord arranged at an inlet of the cord sheathing device and leading to a central chamber connected by a duct to an extrusion device that can deliver the material under pressure in a viscous condition, an outlet die having a given calibration section S1 for at least one sheathed cord, and at least one mobile die having a calibration section S2 smaller than the given calibration section S1, wherein each mobile die is moved in the travel direction of the at least one cord by an actuator that passes through the central chamber and has a passage that allows the central chamber to communicate with the interior space of the mobile die.

Abstract: A technique for extruding a strip of rubber having filaments embedded therein. The rubber is channeled to an extrusion orifice for forming the strip. The outline of the extrusion orifice presents first and second orthogonal planes of symmetry that intersect at a straight line that is substantially parallel to a direction in which the strip is extruded through the extrusion orifice. The channeling of the rubber can be done with an upstream main channel having the first plane as a plane of symmetry, and extended by two downstream secondary channels that are substantially symmetrical to each other about the first plane. The main channel and the two downstream secondary channels also have the second plane as a plane of symmetry.

Abstract: A technique for extruding a strip of rubber having filaments embedded therein. The rubber is channeled to an extrusion orifice for forming the strip. The outline of the extrusion orifice presents first and second orthogonal planes of symmetry that intersect at a straight line that is substantially parallel to a direction in which the strip is extruded through the extrusion orifice. The channeling of the rubber can be done with an upstream main channel having the first plane as a plane of symmetry, and extended by two downstream secondary channels that are substantially symmetrical to each other about the first plane. The main channel and the two downstream secondary channels also have the second plane as a plane of symmetry.

Abstract: A method of manufacturing a circumferential reinforcement for a tire, said reinforcement comprising at least one thread (9) and an elastomeric material (12), in which said thread and a strip (38) of said elastomeric material in the unvulcanized state are wound simultaneously onto a form (21).

Abstract: A cord sheathing device for one or more cords (F) with a plastic or thermoplastic material, comprising guiding means (2) for the cord(s) arranged at the inlet of the device and leading to a central chamber (51) connected by a duct to extrusion means that can deliver the said material under pressure in the viscous condition, an outlet die (4) of given calibration section S1 for the sheathed cord(s), and at least one mobile die (12) with calibration section S2 smaller than the calibration section S1. Each mobile die (12) is moved in the travel direction of the cord(s) F by an actuator (13, 15, 17), passing through the central chamber (51), and having a passage (14) allowing the central chamber (51) to communicate with the interior space of the mobile die (12).